I have one of those ubiquitous 36" belt/6" disc sanders. I've put a lot of
miles on it.
It's starting to develop a really horrible vibration problem. Used to be, I
wouldn't bother putting on my ears just to run this machine by itself. Now
it has become quite obnoxiously loud.
It sounds like it's binding, building up some tension on the belt, and then
releasing it with a loud, hollow THUNK. I can see the powered roller
jolting in time to the thunking.
Obviously, something's out of whack, and I need to figure out what before
the poor thing shakes itself to pieces. I tried to take the machine apart,
but failed to get the disc off, and that was as far as I could get. I
removed the set screw and even resorted to prying on it a little with some
suitable probe, but it's stuck fast, and there's nothing but the plastic
shield to pry against. I don't want to damage my machine, and there's
nothing useful in the manual to give me insight here.
Has anyone encountered the thunking problem? What was it?
Does anyone have any handy dandy tricks for getting the sanding disc off? I
just put on a new piece of sandpaper not too long ago, and so I haven't yet
resorted to pulling it off. I don't remember there being anything to find
under the adhesive disc other than a featureless machined surface.
--
Michael McIntyre ---- Silvan <[email protected]>
Linux fanatic, and certified Geek; registered Linux user #243621
Confirmed post number: 17471 Approximate word count: 524130
http://www.geocities.com/Paris/Rue/5407/
Unscrew it from the table and turn it over. Mine did the same and I
tightened the belt and it diminished. Sounded like something was out of
round on mine. Do not advise removing the disk if at all possible.
After loosening mine it refuses to stay put. the Set screw on the side
of the back of the disk is a bear to keep tight in the aluminum disk.
Even with blue loc-tite. Look down behind the disk while slowly rotating
it and you can see the set screw. I made a mark on the perimeter of the
disk so I can find the set screw easier.
Silvan wrote:
>
> I have one of those ubiquitous 36" belt/6" disc sanders. I've put a lot of
> miles on it.
>
> It's starting to develop a really horrible vibration problem. Used to be, I
> wouldn't bother putting on my ears just to run this machine by itself. Now
> it has become quite obnoxiously loud.
>
> It sounds like it's binding, building up some tension on the belt, and then
> releasing it with a loud, hollow THUNK. I can see the powered roller
> jolting in time to the thunking.
>
> Obviously, something's out of whack, and I need to figure out what before
> the poor thing shakes itself to pieces. I tried to take the machine apart,
> but failed to get the disc off, and that was as far as I could get. I
> removed the set screw and even resorted to prying on it a little with some
> suitable probe, but it's stuck fast, and there's nothing but the plastic
> shield to pry against. I don't want to damage my machine, and there's
> nothing useful in the manual to give me insight here.
>
> Has anyone encountered the thunking problem? What was it?
>
> Does anyone have any handy dandy tricks for getting the sanding disc off? I
> just put on a new piece of sandpaper not too long ago, and so I haven't yet
> resorted to pulling it off. I don't remember there being anything to find
> under the adhesive disc other than a featureless machined surface.
>
> --
> Michael McIntyre ---- Silvan <[email protected]>
> Linux fanatic, and certified Geek; registered Linux user #243621
> Confirmed post number: 17471 Approximate word count: 524130
> http://www.geocities.com/Paris/Rue/5407/
--
Gerald Ross
Cochran, GA
...........................................
Is there life before coffee?
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This may be a good place to try a link belt. It can be installed and
removed without taking the machine apart and might stop the clunking
induced by the "set" in the belt shape. Just a thought.
Silvan wrote:
>
> Silvan wrote:
>
> > It sounds like it's binding, building up some tension on the belt, and
> > then releasing it with a loud, hollow THUNK. I can see the powered
>
> It is indeed the belt. It's coming apart. Most of the teeth have fallen
> off, and the difference between toothed and un-toothed belt is causing the
> thunking. When it transitions to a part of the belt where teeth are
> engaged on both pulleys, the belt gets tighter. When it travels past the
> teeth to a toothless portion of the belt, this tension is released, and the
> belt snaps back, jarring the motor quite badly. I think there might be a
> pulley alignment problem at play here too, but it's hard to say how much of
> a factor the damaged belt is until I try a fresh one that's in good shape.
>
> I've had no luck procuring a replacement belt for this. The guy at Lowe's
> says he can order one for me, but it seems like I should be able to order
> one for myself. So far, no luck. Delta's web page didn't lead me
> anywhere. A web search for the belt itself revealed nothing. It's some
> kind of rubber/felt deal, toothed, and says "UNNITA 160XL 158J 102 103 104"
>
> Any idea where I might pick up such a thing? Not having my belt sander
> SUCKS!
>
> > but failed to get the disc off, and that was as far as I could get. I
> > removed the set screw and even resorted to prying on it a little with some
>
> FOR POSTERITY, what the manual doesn't tell you, which I finally figured out
> after I stared at it for awhile:
>
> Rotate the sanding disc until you find the set screw. Loosen it, being
> careful not to drop it into the guts of the machine.
>
> Remove the sanding belt. Rotate the power roller until you find a tapped
> hole in the middle. Thread in a 5/16"-18 bolt, then loosen the adjustment
> screw holding the belt sander mechanism in position, and raise it to
> vertical, trapping the bolt between the platten and the dust extraction
> hood at the back of the machine.
>
> With the roller thus pinned, and the set screw removed, pull off the
> sandpaper disc, revealing two more holes tapped for 5/16"-18 bolts
> underneath. Thread in a pair, and using two ratchets, tighten both of them
> in unison.
>
> BE CAREFUL NOT TO TIGHTEN THEM SO MUCH THAT THEY PUNCH HOLES IN THE PLASTIC
> DRIVE PULLEY! (DAMHIKT...)
>
> Continue carefully in this fashion until enough of the disc is off the shaft
> that you can get a bite on it with your fingers, or perhaps grab onto the
> bolts with a pair of vise grips or something to wiggle the disc the rest of
> the way off the shaft. You won't be able to tighten the bolts far enough
> to get the disc all the way off without punching holes in the drive pulley,
> so do not try.
>
> Once the disc is off, the rest of the disassembly is pretty straightforward.
>
> Anyone have any tips for how I can make sure I have re-aligned the pulley
> correctly? In my case, I punched right through it with both bolts, and the
> bolts eventually found purchase against the casting. This got the plate
> all the way off, but it also pulled the pulley halfway off the shaft.
> Dammit.
>
> --
> Michael McIntyre ---- Silvan <[email protected]>
> Linux fanatic, and certified Geek; registered Linux user #243621
> Confirmed post number: 17479 Approximate word count: 524370
> http://www.geocities.com/Paris/Rue/5407/
--
Gerald Ross
Cochran, GA
...........................................
Is there life before coffee?
-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----
http://www.paragoncode.com/shop/link_belts/ has a nice little write
up on this very subject with complete links to the big two suppliers.
> Gerald Ross wrote:
> For one thing, I've never seen a link belt for sale anywhere, except those
> intended to be used on cars for emergency repairs (and I haven't seen one
> of those in years.) For another, I've never seen them anywhere close to
> narrow enough for this application.
>
> Where can I buy a 3/8" wide link belt, and would the teeth on the pulleys be
> a problem?
Gerald Ross wrote:
> This may be a good place to try a link belt. It can be installed and
> removed without taking the machine apart and might stop the clunking
> induced by the "set" in the belt shape. Just a thought.
I'm open to anything up to an including braided horse hair or cat whiskers.
I just want to get the machine back up.
Delta hasn't answered my email. Nobody lists a suitable belt in an online
inventory system. I'm just coming up completely empty here, which is
somewhat baffling because there are millions of these machines in use every
day.
For one thing, I've never seen a link belt for sale anywhere, except those
intended to be used on cars for emergency repairs (and I haven't seen one
of those in years.) For another, I've never seen them anywhere close to
narrow enough for this application.
Where can I buy a 3/8" wide link belt, and would the teeth on the pulleys be
a problem?
--
Michael McIntyre ---- Silvan <[email protected]>
Linux fanatic, and certified Geek; registered Linux user #243621
Confirmed post number: 17496 Approximate word count: 524880
http://www.geocities.com/Paris/Rue/5407/
It's too late. Change out those bearings and sanding belt drive pully.
"Sweet Sawdust" <[email protected]> wrote in message
news:[email protected]...
> Bearings. Had the same thing happen to a Griz sander. Change out those
> bearings NOW!!!.
> "Silvan" <[email protected]> wrote in message
> news:[email protected]...
> > I have one of those ubiquitous 36" belt/6" disc sanders. I've put a lot
> of
> > miles on it.
> >
> > It's starting to develop a really horrible vibration problem. Used to
be,
> I
> > wouldn't bother putting on my ears just to run this machine by itself.
> Now
> > it has become quite obnoxiously loud.
> >
> > It sounds like it's binding, building up some tension on the belt, and
> then
> > releasing it with a loud, hollow THUNK. I can see the powered roller
> > jolting in time to the thunking.
> >
> > Obviously, something's out of whack, and I need to figure out what
before
> > the poor thing shakes itself to pieces. I tried to take the machine
> apart,
> > but failed to get the disc off, and that was as far as I could get. I
> > removed the set screw and even resorted to prying on it a little with
some
> > suitable probe, but it's stuck fast, and there's nothing but the plastic
> > shield to pry against. I don't want to damage my machine, and there's
> > nothing useful in the manual to give me insight here.
> >
> > Has anyone encountered the thunking problem? What was it?
> >
> > Does anyone have any handy dandy tricks for getting the sanding disc
off?
> I
> > just put on a new piece of sandpaper not too long ago, and so I haven't
> yet
> > resorted to pulling it off. I don't remember there being anything to
find
> > under the adhesive disc other than a featureless machined surface.
> >
> > --
> > Michael McIntyre ---- Silvan <[email protected]>
> > Linux fanatic, and certified Geek; registered Linux user #243621
> > Confirmed post number: 17471 Approximate word count: 524130
> > http://www.geocities.com/Paris/Rue/5407/
> >
>
>
Lee valley, Woodworkers Supply, Grizzly, every other woodworking
supply I know has it.
On Tue, 02 Sep 2003 17:47:19 -0400, Silvan
<[email protected]> wrote:
>Gerald Ross wrote:
>
>> This may be a good place to try a link belt. It can be installed and
>> removed without taking the machine apart and might stop the clunking
>> induced by the "set" in the belt shape. Just a thought.
>
>I'm open to anything up to an including braided horse hair or cat whiskers.
>I just want to get the machine back up.
>
>Delta hasn't answered my email. Nobody lists a suitable belt in an online
>inventory system. I'm just coming up completely empty here, which is
>somewhat baffling because there are millions of these machines in use every
>day.
>
>For one thing, I've never seen a link belt for sale anywhere, except those
>intended to be used on cars for emergency repairs (and I haven't seen one
>of those in years.) For another, I've never seen them anywhere close to
>narrow enough for this application.
>
>Where can I buy a 3/8" wide link belt, and would the teeth on the pulleys be
>a problem?
'Silvan'
Think . . . "BEARINGS". Either the motor itself, or more likely the bearings
that support the 'Drive Roller' and/or the 'Idler Roller'. {IF it's one . .
. replace them ALL}
Re - the sanding disk . . . get a hair dryer {I 'rescued' one my wife
through out . . . women with long hair 'kill' them rather regularly}. Play
it across the disk, on the 'Lo' or 'Warm' setting. As it warms up, begin
peeling the old disk off. Keep the warm air going.
A couple of tricks . . . if the disk is still good, 'sandwich' it between a
couple of pieces of wax paper . . . use the same warming trick on the platen
when re-applying the a new PSA disk, or Disk Cement if using a 'dry' sanding
disk.
Regards & Good Luck,
Ron Magen
Backyard Boatshop
"Silvan" <[email protected]> wrote in message
news:[email protected]...
> I have one of those ubiquitous 36" belt/6" disc sanders. I've put a lot
of
> miles on it.
> It's starting to develop a really horrible vibration problem.
SNIP
> Does anyone have any handy dandy tricks for getting the sanding disc
off?--
> Michael McIntyre ---- Silvan
Bearings. Had the same thing happen to a Griz sander. Change out those
bearings NOW!!!.
"Silvan" <[email protected]> wrote in message
news:[email protected]...
> I have one of those ubiquitous 36" belt/6" disc sanders. I've put a lot
of
> miles on it.
>
> It's starting to develop a really horrible vibration problem. Used to be,
I
> wouldn't bother putting on my ears just to run this machine by itself.
Now
> it has become quite obnoxiously loud.
>
> It sounds like it's binding, building up some tension on the belt, and
then
> releasing it with a loud, hollow THUNK. I can see the powered roller
> jolting in time to the thunking.
>
> Obviously, something's out of whack, and I need to figure out what before
> the poor thing shakes itself to pieces. I tried to take the machine
apart,
> but failed to get the disc off, and that was as far as I could get. I
> removed the set screw and even resorted to prying on it a little with some
> suitable probe, but it's stuck fast, and there's nothing but the plastic
> shield to pry against. I don't want to damage my machine, and there's
> nothing useful in the manual to give me insight here.
>
> Has anyone encountered the thunking problem? What was it?
>
> Does anyone have any handy dandy tricks for getting the sanding disc off?
I
> just put on a new piece of sandpaper not too long ago, and so I haven't
yet
> resorted to pulling it off. I don't remember there being anything to find
> under the adhesive disc other than a featureless machined surface.
>
> --
> Michael McIntyre ---- Silvan <[email protected]>
> Linux fanatic, and certified Geek; registered Linux user #243621
> Confirmed post number: 17471 Approximate word count: 524130
> http://www.geocities.com/Paris/Rue/5407/
>
Silvan <[email protected]> writes:
> Silvan wrote:
>
> > It sounds like it's binding, building up some tension on the belt, and
> > then releasing it with a loud, hollow THUNK. I can see the powered
>
> It is indeed the belt. It's coming apart. Most of the teeth have fallen
> off, and the difference between toothed and un-toothed belt is causing the
[...]
> Any idea where I might pick up such a thing? Not having my belt sander
> SUCKS!
Toothed belts are usually made to order, but you should take the old
one to any decent transmission belt vendor (usually combined with a
ball-bearing store), which should exist in any respectable city and
can even vbe found in smnall country towns; at least in Germany, in
the US it should be also possible to locate one if the BORG have not
assimilated all...
--
Dr. Juergen Hannappel http://lisa2.physik.uni-bonn.de/~hannappe
mailto:[email protected] Phone: +49 228 73 2447 FAX ... 7869
Physikalisches Institut der Uni Bonn Nussallee 12, D-53115 Bonn, Germany
CERN: Phone: +412276 76461 Fax: ..77930 Bat. 892-R-A13 CH-1211 Geneve 23
Silvan <[email protected]> writes:
> Silvan wrote:
>
> > It sounds like it's binding, building up some tension on the belt, and
> > then releasing it with a loud, hollow THUNK. I can see the powered
>
> It is indeed the belt. It's coming apart. Most of the teeth have fallen
> off, and the difference between toothed and un-toothed belt is causing the
[...]
> Any idea where I might pick up such a thing? Not having my belt sander
> SUCKS!
Teethet belts are usually made to order, nut you should take the old
one to any decent transmission belt vendor (usually combined with a
ball-bearing store), which should exist in any respectable city and
can even vbe found in smnall country towns; at least in Germany, in
the US it should be also possible to locate one if the BORG have not
assimilated all...
--
Dr. Juergen Hannappel http://lisa2.physik.uni-bonn.de/~hannappe
mailto:[email protected] Phone: +49 228 73 2447 FAX ... 7869
Physikalisches Institut der Uni Bonn Nussallee 12, D-53115 Bonn, Germany
CERN: Phone: +412276 76461 Fax: ..77930 Bat. 892-R-A13 CH-1211 Geneve 23
"Silvan" <[email protected]> wrote in message
news:[email protected]...
> I have one of those ubiquitous 36" belt/6" disc sanders. I've put a lot
of
> miles on it.
>
> It's starting to develop a really horrible vibration problem. Used to be,
I
> wouldn't bother putting on my ears just to run this machine by itself.
Now
> it has become quite obnoxiously loud.
> > Does anyone have any handy dandy tricks for getting the sanding disc
off? I
> just put on a new piece of sandpaper not too long ago, and so I haven't
yet
> resorted to pulling it off. I don't remember there being anything to find
> under the adhesive disc other than a featureless machined surface.
>
> --
> Michael McIntyre ---- Silvan <[email protected]>
I had one develop those symptoms before the bearings completely locked up.
I replaced it with a 6x48/12 sander. There is nothing under the disc on
mine but a flat plate. The plate is keyed to the motor shaft and held in
place with a set screw. Someone may have used Loctite on the set screw or
shaft. GENTLE tapping from the shaft side may loosen it. Or you might try
heating it with a heat gun [or your wife's blow dryer]. harrym